Module Name: src
Committed By: macallan
Date: Thu Dec 5 12:37:16 UTC 2024
Modified Files:
src/sys/dev/ic: summitreg.h
Log Message:
more bits
found STI's colour change mode, but no ROPs yet
To generate a diff of this commit:
cvs rdiff -u -r1.6 -r1.7 src/sys/dev/ic/summitreg.h
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/dev/ic/summitreg.h
diff -u src/sys/dev/ic/summitreg.h:1.6 src/sys/dev/ic/summitreg.h:1.7
--- src/sys/dev/ic/summitreg.h:1.6 Thu Nov 28 12:29:55 2024
+++ src/sys/dev/ic/summitreg.h Thu Dec 5 12:37:16 2024
@@ -1,4 +1,4 @@
-/* $NetBSD: summitreg.h,v 1.6 2024/11/28 12:29:55 macallan Exp $ */
+/* $NetBSD: summitreg.h,v 1.7 2024/12/05 12:37:16 macallan Exp $ */
/*
* Copyright (c) 2024 Michael Lorenz
@@ -63,9 +63,18 @@
#define VISFX_WRITE_MODE_FILL 0x050008c0
#define VISFX_WRITE_MODE_TRANSPARENT 0x00000800 /* bg is tansparent */
#define VISFX_WRITE_MODE_MASK 0x00000400 /* apply pixel mask */
+/* 0x00000200 - some pattern */
+/* looks like 0x000000c0 enables fb/bg colours to be applied */
#define VISFX_READ_MODE_COPY 0x02000400
+/*
+ * for STI colour change mode:
+ * set VISFX_FG_COLOUR, VISFX_BG_COLOUR
+ * set VISFX_VRAM_READ_MODE 0x05000400
+ * set VISFX_VRAM_WRITE_MODE 0x050000c0
+ */
+
/* fill */
#define VISFX_START 0xb3c000
#define VISFX_SIZE 0xb3c808 /* start, FX4 uses 0xb3c908 */
@@ -76,7 +85,14 @@
#define VISFX_COPY_DST 0xb3cc00
/*
* looks like ORing 0x800 to the register address starts a command
- * 0x100 and 0x400 seem to have functions as well
+ * - 0x800 - fill
+ * - 0xc00 - copy
+ * 0x100 and 0x200 seem to have functions as well, not sure what though
+ * for example, the FX4 ROM uses 0xb3c908 to start a rectangle fill, but
+ * it also works with 0xb3c808 and 0xb3ca08
+ * same with copy, 0xc00 seems to be what matters, setting 0x100 or 0x200
+ * doesn't seem to make a difference
+ * 0x400 or 0x100 by themselves don't start a command either
*/
#define VISFX_COLOR_MASK 0x800018
